public async Task <IEnumerable <Client> > GetAllClients()
{
IEnumerable <Client> clientsData;
string key = "CachingKey";
HttpResponseMessage Response = await _httpClient.GetAsync("v2/5808862710000087232b75ac");
if (Response.IsSuccessStatusCode)
{
using Stream responseStream = await Response.Content.ReadAsStreamAsync();
ListOfClients listOfClients = await JsonSerializer.DeserializeAsync <ListOfClients>(responseStream);
clientsData = listOfClients.Clients;
// Store data in the cache.
_cache.Set <IEnumerable <Client> >(key, clientsData);
return(clientsData);
}
else
{
// In case webservice is not reachable/does not respond return persisted
// data from cache (from last succesfull call to Webservice).
if (!_cache.TryGetValue(key, out clientsData))
{
throw new Exception("Clients data cannot be retrieved from backend webservice and there is no clients data available in the cache.");
}
else
{
// Return persistent data from last succesfull call to Webservice.
return(clientsData);
}
}
}
private void buttonAdd_Click(object sender, RoutedEventArgs e)
{
//otwarcie nowego okna klienta
var clientWindow = new clientWindow();
if (clientWindow.ShowDialog() == true)
{
//szczytanie i przypisanie wartosci do nowej instancji klasy typu client
Client client = new Client()
{
name = clientWindow.nameTextbox.Text,
surname = clientWindow.surnameTextbox.Text
};
ListOfClients.Add(client);
}
}
